US4074597A - Pliers - Google Patents

Pliers Download PDF

Info

Publication number
US4074597A
US4074597A US05/746,080 US74608076A US4074597A US 4074597 A US4074597 A US 4074597A US 74608076 A US74608076 A US 74608076A US 4074597 A US4074597 A US 4074597A
Authority
US
United States
Prior art keywords
pliers
handle
guiding track
spring
handles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/746,080
Other languages
English (en)
Inventor
Conny Erik Jansson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SNA Europe Industries AB
Original Assignee
Bahco Verktyg AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bahco Verktyg AB filed Critical Bahco Verktyg AB
Application granted granted Critical
Publication of US4074597A publication Critical patent/US4074597A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/10—Handle constructions characterised by material or shape
    • B25G1/12—Handle constructions characterised by material or shape electrically insulating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools

Definitions

  • the invention relates to pliers with two limbs pivotally united in a joint and with a spring which, to move the handles of the limbs apart, is arranged between them and has an end part attached in a recess in the handle of one limb, and a free end part which, when the handles are moved towards each other against the spring bias, engages glidingly in a trough-like guiding track on the handle of the second limb, the track being open to the first limb, the free end part being so orientated that its place of engagement against the guiding track, during the movement of the handles towards each other, is moved in a direction away from the joint of the pliers.
  • the requirements of the opening function of the pliers, determined by the spring, varies with the type and field of use of the pliers.
  • the invention is primarily intended to solve problems present with relation to said function in so-called electronics pliers, i.e. pliers which are used in assembly work in industrial production within the electronics industry and which are also used to a great extent for service work on the industrial products produced by this industry.
  • electronics pliers i.e. pliers which are used in assembly work in industrial production within the electronics industry and which are also used to a great extent for service work on the industrial products produced by this industry.
  • pliers which are used in assembly work in industrial production within the electronics industry and which are also used to a great extent for service work on the industrial products produced by this industry.
  • side cutters it is found that one and the same person makes thousands of nips per working day with the same pliers.
  • the spring in the pliers offers a distinct opening movement without causing too great an increase of the force required for bringing the limbs together
  • the object of the invention is to provide pliers, the spring of which offers a distinct opening function, and is so placed that it leaves the handles free, while it is so arranged for easy exchange that the functional ability of the pliers is well provided for, and with the slightest fault in the spring function can be immediately regained by putting in a new spring.
  • FIG. 1 is a perspective view of the pliers seen from the front
  • FIG. 2 is a plan view of the rear side of the same pliers
  • FIG. 3 is a side view of the same pliers
  • FIG. 4 is a partly cut away partial view of the front of the pliers showing the position of the spring
  • FIG. 5 is a perspective detail view showing the attachment of the spring to a handle sleeve on one limb of the pliers
  • FIG. 6 illustrates schematically the coaction between the spring and a guiding track for its free end.
  • the pliers shown are side cutters and have two limbs 1 and 2 pivotably united in a so-called single joint 3. At this joint both the limbs are adjustably kept together by a joint screw 4 with a partly countersunk head and a partly countersunk centering nut 5, both with a screwdriver slot for assembly and setting.
  • the jaws 6 of the pliers are made with side-cutting edges.
  • a spring 7 (FIG. 4) is arranged to move the handles 8, 9 of the limbs 1, 2 apart, and is situated between the limbs, with an end part 10 attached to one limb 1 and an opposing free end part 11 which, when moving the handles sufficiently far in a direction towards each other to cut with the pliers, engages glidingly against a guiding track 12 on the second limb 2 while exercising increasing spring bias against it.
  • the free end part 11 is so directed that its place of engagement against the guiding track 12, during the movement of the handles towards each other, is moved in a direction away from the joint 3 of the pliers.
  • the limbs 1 and 2 are provided with handle sleeves 13 and 14, made from plastic, for example, to provide a comfortable grip.
  • the end part 10 of the spring 7, attached to the first limb 1, is actually introduced into a recess 15 in the handle sleeve 13 sideways to the hole 16 in the sleeve intended for the steel handle core of the limb 1.
  • the spring is made from round wire but its end part 10 has been given a profiled, i.e. non-round, cross-section by means of hairpin bending.
  • the recess 15 has a slit for one hairpin leg on the end part 10, orientated in the longitudinal direction of the handle.
  • the other hairpin leg of the end part 10 passes over via a helically wound loop 17 into the free end part 11 of the spring.
  • the last-mentioned hairpin leg engages against a wall in the recess and against the steel core of the handle opposite to the said slot, while the spring loop 17 engages against another portion of the wall in which the slit is arranged, whereby the spring 7, as a result of the shape of the profile of end part 10 and the recess, is retained in the recess, partly as a result of the spring bias of the hairpin bend, and is furthermore safeguarded against twisting so that its free end projecting out of the recess 15, loaded or unloaded by the opposite limb 2, is safely localized to a predetermined plane substantially parallel to the main plane of the pliers. Even if both handles of the pliers are taken from a wide-open position to a closed jaw position, the outer end of the free end part 11 of the spring hereby meets the guiding track 12, causing the spring to come into action during the final period of the closing movement.
  • the guiding track 12 is arranged on a projection 18 (FIG. 4) facing the first limb 1, on the handle sleeve 14 of the second limb 2.
  • the object with this placing on a projection is to enable such a form and orientation of the guiding track that it either substantially coincides with a line through the centre of the pliers joint, or at its intersection points with such lines has such a slope that it approaches the first limb with increasing distance from the pliers joint.
  • the end portion 11 of the spring is given a large movement which can be selected when dimensioning the handle sleeves, quite independent of the desired slope for correct grip of the handles themselves.
  • FIG. 6 shows schematically an example of a straight guiding track 12, having such slope that with increasing distance from the pliers joint it approaches the first limb (not shown).
  • a line B is drawn through the joint centre A of the pliers and cuts the guiding track 12.
  • the first limb of the pliers is situated below the guiding track and carries the spring in its handle sleeve, whereat the free end of the spring in a first position (full line) of the limbs can be assumed to turn about the point C on the first limb and is in gliding contact with the guiding track 12 at point D.
  • the twisting centre of the spring is moved from point C to point E and the end of the spring glides along the guiding track to the point F.
  • the spring compression substantially taken up by the spring loop 17 and determined by the alteration in slope between the end portion 11 and the limb 1, i.e. between the end portion 11 and the A-C and A-E, respectively, in both shown positions is obviously much greater than if the end part of the spring were to have followed the inner configuration of a handle as indicated by the line G.
  • FIG. 4 also has the linear guiding track 12, but so orientated that when the handles 8, 9 are moved together to an end position for the cutting movement of the pliers, it substantially coincides with the line through the pivoting centre of the pliers and which consitutets the symmetry line 19 of the pliers with relation to its handle sleeves 13, 14.
  • the free end part 11 of the spring 7 is substantially straight but at its outer end is bent to form a suitable engagement surface against the guiding track 12 consisting of a straight trough with a U-profile facing the opposing limb 1.
  • Both handle sleeves 13, 14 of the limbs are suitably identically alike and each have a guiding track 12 as well as a recess 15 for the spring attachment.
  • the guiding track and recess are placed side by side in each handle sleeve in the direction of thickness of the pliers (see FIG. 5) and allow the spring 7 to be mounted in an arbitrarily selected handle sleeve, and furthermore that such a spring can be placed in each handle sleeve, if required by greater opening force than what can be provided with a single spring.
  • the identically similar shape of the handle sleeves also enables, as is especially apparent from FIGS. 1 and 2, an enclosure of the spring which is advantageous for the appearance of the pliers.
  • the guiding track on the limb 2 for the free end of the spring does not need to be straight, but can be curved towards the first limb 1. It is also conceivable to make the spring from strip material with, or without, a hairpin bend at the attachment end. Neither in these nor in other respects is the invention thus limited to the embodiments shown, but can be varied within the scope of the following claim 1.
US05/746,080 1975-12-19 1976-11-30 Pliers Expired - Lifetime US4074597A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SW7514465 1975-12-19
SE7514465A SE398995B (sv) 1975-12-19 1975-12-19 Tang

Publications (1)

Publication Number Publication Date
US4074597A true US4074597A (en) 1978-02-21

Family

ID=20326402

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/746,080 Expired - Lifetime US4074597A (en) 1975-12-19 1976-11-30 Pliers

Country Status (6)

Country Link
US (1) US4074597A (xx)
JP (1) JPS5280600A (xx)
DE (1) DE2653840B2 (xx)
FR (1) FR2335312A1 (xx)
GB (1) GB1559600A (xx)
SE (1) SE398995B (xx)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114268A (en) * 1977-11-02 1978-09-19 The Stanley Works Shears with improved latch for handles
US4304158A (en) * 1979-03-19 1981-12-08 Aktiebolaget Bahco Verktyg Grip sleeve for a handle
US6244489B1 (en) 1998-12-11 2001-06-12 Robert Laurie Retractable staple remover jaws utilizing stapler machine as lever handles
US6497165B1 (en) * 1999-05-03 2002-12-24 Serenco Nederland Bv Water pump pliers with single-hand control
WO2003058785A1 (en) * 2002-01-08 2003-07-17 Ideal Industries, Inc. Soft-grip wire stripper
US20040163495A1 (en) * 2002-01-08 2004-08-26 Konen Bruce P. Soft-grip wire stripper
US20040217547A1 (en) * 2000-07-17 2004-11-04 Lau Edward E. Method of playing a new wagering card game
US20060048391A1 (en) * 2004-09-08 2006-03-09 Joseph Bellissimo Close cut cutting instrument
US20060085988A1 (en) * 2002-07-29 2006-04-27 Wurzel Paulo R Cuticle cutter
US7086312B1 (en) 2001-12-28 2006-08-08 Kenneth Guy Tortolani Parallel jaw locking toggle wrench/pliers with economic/ergonomic handles
WO2017001205A1 (de) * 2015-06-29 2017-01-05 Orbis Will GmbH & Co. KG Handwerkzeug
USD791562S1 (en) * 2016-01-08 2017-07-11 Sna Europe Industries Iberia, S.A. Pliers
WO2017178997A1 (en) * 2014-04-30 2017-10-19 Grip Tooling Technologies Llc Power transfer pliers
USD908983S1 (en) * 2020-08-06 2021-01-26 Fengbo Zhao Pet nail clipper
USD966063S1 (en) 2018-03-07 2022-10-11 Grip Holdings Llc Socket
US11590637B2 (en) 2017-04-27 2023-02-28 Grip Holdings Llc Methods and apparatuses for extracting and dislodging fasteners
US11602828B2 (en) 2019-07-30 2023-03-14 Grip Holdings Llc Multi-grip screw apparatus
US11701757B2 (en) 2018-09-19 2023-07-18 Grip Holdings Llc Anti-slip fastener remover tool
US11759918B2 (en) 2019-05-09 2023-09-19 Grip Holdings Llc Anti-slip torque tool with integrated engagement features
USD1026602S1 (en) 2022-03-17 2024-05-14 Grip Holdings Llc Selectable twist tool

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8330495U1 (de) * 1983-10-22 1984-01-19 Belzer-Dowidat Gmbh Werkzeug-Union, 5600 Wuppertal Zange
DE19505080C2 (de) * 1995-02-15 1998-02-19 Guenter Nusbaumer Spaltzange zum Trennen von Glassmalten

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US833714A (en) * 1905-11-09 1906-10-16 David Henry Goode Fruit-clipper.
US2074239A (en) * 1936-04-04 1937-03-16 Rush William Hand tool
US2881696A (en) * 1956-11-07 1959-04-14 Poth George Henry Fruit slice juice extractor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US833714A (en) * 1905-11-09 1906-10-16 David Henry Goode Fruit-clipper.
US2074239A (en) * 1936-04-04 1937-03-16 Rush William Hand tool
US2881696A (en) * 1956-11-07 1959-04-14 Poth George Henry Fruit slice juice extractor

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114268A (en) * 1977-11-02 1978-09-19 The Stanley Works Shears with improved latch for handles
US4304158A (en) * 1979-03-19 1981-12-08 Aktiebolaget Bahco Verktyg Grip sleeve for a handle
US6244489B1 (en) 1998-12-11 2001-06-12 Robert Laurie Retractable staple remover jaws utilizing stapler machine as lever handles
US6371349B2 (en) 1998-12-11 2002-04-16 Robert S. Laurie Retractable staple remover jaws utilizing stapler machine as lever handles
US6497165B1 (en) * 1999-05-03 2002-12-24 Serenco Nederland Bv Water pump pliers with single-hand control
US6895840B2 (en) 1999-05-03 2005-05-24 Gunther Schulz Water pump pliers with single-hand control
US20040217547A1 (en) * 2000-07-17 2004-11-04 Lau Edward E. Method of playing a new wagering card game
US7086312B1 (en) 2001-12-28 2006-08-08 Kenneth Guy Tortolani Parallel jaw locking toggle wrench/pliers with economic/ergonomic handles
US20040163495A1 (en) * 2002-01-08 2004-08-26 Konen Bruce P. Soft-grip wire stripper
US6739217B2 (en) * 2002-01-08 2004-05-25 Ideal Industries, Inc. Soft-grip wire stripper
US7055414B2 (en) * 2002-01-08 2006-06-06 Ideal Industries, Inc. Soft-grip wire stripper
WO2003058785A1 (en) * 2002-01-08 2003-07-17 Ideal Industries, Inc. Soft-grip wire stripper
US7100481B2 (en) 2002-01-08 2006-09-05 Ideal Industries, Inc. Soft-grip wire stripper
CN100416956C (zh) * 2002-01-08 2008-09-03 理想工业公司 软柄剥线钳
CN101364719B (zh) * 2002-01-08 2013-02-13 理想工业公司 软柄剥线钳
US20040205897A1 (en) * 2002-01-08 2004-10-21 Hartranft Bruce W. Soft-grip wire stripper
US20060085988A1 (en) * 2002-07-29 2006-04-27 Wurzel Paulo R Cuticle cutter
US7210230B2 (en) * 2002-07-29 2007-05-01 Zivi S/A Cutelaria Cuticle cutter
US20060048391A1 (en) * 2004-09-08 2006-03-09 Joseph Bellissimo Close cut cutting instrument
WO2017178997A1 (en) * 2014-04-30 2017-10-19 Grip Tooling Technologies Llc Power transfer pliers
WO2017001205A1 (de) * 2015-06-29 2017-01-05 Orbis Will GmbH & Co. KG Handwerkzeug
CN107921611A (zh) * 2015-06-29 2018-04-17 奥比斯威尔两合公司 手持工具
USD791562S1 (en) * 2016-01-08 2017-07-11 Sna Europe Industries Iberia, S.A. Pliers
US11590637B2 (en) 2017-04-27 2023-02-28 Grip Holdings Llc Methods and apparatuses for extracting and dislodging fasteners
USD966063S1 (en) 2018-03-07 2022-10-11 Grip Holdings Llc Socket
US11701757B2 (en) 2018-09-19 2023-07-18 Grip Holdings Llc Anti-slip fastener remover tool
US11759918B2 (en) 2019-05-09 2023-09-19 Grip Holdings Llc Anti-slip torque tool with integrated engagement features
US11602828B2 (en) 2019-07-30 2023-03-14 Grip Holdings Llc Multi-grip screw apparatus
USD908983S1 (en) * 2020-08-06 2021-01-26 Fengbo Zhao Pet nail clipper
USD1026602S1 (en) 2022-03-17 2024-05-14 Grip Holdings Llc Selectable twist tool

Also Published As

Publication number Publication date
SE398995B (sv) 1978-01-30
JPS5749352B2 (xx) 1982-10-21
DE2653840C3 (xx) 1978-12-14
FR2335312A1 (fr) 1977-07-15
DE2653840A1 (de) 1977-06-30
JPS5280600A (en) 1977-07-06
DE2653840B2 (de) 1978-04-20
SE7514465L (sv) 1977-06-20
GB1559600A (en) 1980-01-23
FR2335312B1 (xx) 1979-03-09

Similar Documents

Publication Publication Date Title
US4074597A (en) Pliers
US4811486A (en) Pocket knife
US5199756A (en) Locking tongs
US4023450A (en) Pliers of plastic
US7055414B2 (en) Soft-grip wire stripper
US3030060A (en) Curtain rod mounting devices
EP0887046A3 (en) Laparoscopic surgical instrument
US4485696A (en) Apparatus for wire stripping
DE59209955D1 (de) Zange mit zwei Zangenschenkeln
US4304158A (en) Grip sleeve for a handle
US4395928A (en) Hand tool for stripping insulation from wire
US6189219B1 (en) Multiple purpose compound action snips
US5575070A (en) Knife with adjustable guide
US3956950A (en) Electrical tool
US20070151108A1 (en) Safety razor apparatus having an adjustable guiding member
US4152797A (en) Precision small wire and untwisting tool
ATE97563T1 (de) Zange.
US4488425A (en) Bending tool
US2848810A (en) Long nose cutting pliers
US5291810A (en) Pinch free gripping pliers with adjustable multiple position groove joint and an overtravel stop device
EP0131647A3 (en) Combination tool
WO1980000392A1 (en) Wire stripping tools
US4400876A (en) Spring devices
GB2077176A (en) Jaw for wire-stripping pliers
US4569260A (en) Pliers-type hand tool